Multistage fermentation purification treatment device for sewage treatment

Abstract

The invention discloses a sewage treatment multi-stage fermentation purification treatment device which comprises a fermentation tank body, and the interior of the fermentation tank body is divided into a plurality of fermentation cavities for independent fermentation through a plurality of inner partition plates; a through pipe communicated with the adjacent fermentation cavities is mounted at the lower end of the inner partition plate, and a control valve capable of being automatically opened and closed is mounted on the through pipe; a vacuum suction structure is mounted on the fermentation tank body, the fermentation cavity is subjected to negative pressure step by step through the vacuum suction structure, and fermentation wastewater enters the fermentation cavity in a negative pressure state; the vacuum suction structure comprises a long vacuum suction pipe, and a vacuum pump body is mounted at the outer end of the long vacuum suction pipe; the long vacuum suction pipe is communicated with a plurality of vacuum suction pipes which are respectively positioned in the fermentation cavity, and electromagnetic control valves are arranged on the vacuum suction pipes. According to the fermentation device disclosed by the invention, single-tank multi-stage fermentation is realized, and sewage can be conveniently converted among different fermentation cavities in the multi-stage fermentation.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment multi-stage fermentation purification treatment device. Background Art

[0002] Sewage is wastewater generated by urban life and industrial production. With the increase of production activities, such as industrial production, a large amount of sewage is generated in the production process. In particular, the sewage generated in the industrial production process not only contains a large amount of toxic and harmful substances, but also has high toxicity. Therefore, it can only be recycled after purification.

[0003] Therefore, with the increasingly serious environmental problems of sewage, the technical improvements for environmentally friendly sewage treatment are becoming more mature. For example, the Chinese patent announcement number is: CN 222566909 U, which discloses a hydraulic cyclone sand settling tank for sewage treatment. The specific technical scheme includes a tank body, which has an inlet and an outlet. The inlet is connected to the inlet channel, and the outlet is connected to the outlet channel. A sand collecting area is arranged in the tank body, and the sand settling area is connected above the sand collecting area. A sand lifting pipe, an air flushing pipe, and an air lift pipe are arranged in the sand collecting area. The sand lifting pipe extends upward from the top cover of the tank body and is connected to the sand discharge pipe; the air flushing pipe and the air lift pipe are connected in parallel to the compressed air pipe; the inlet channel is set to a predetermined slope so that the flow velocity of the sewage to be treated in the inlet channel increases and enters the sand settling area along the tangential direction. Through the technical scheme disclosed in the above patent, it is possible to avoid affecting the operation of the sewage plant due to problems with the mixing equipment.

[0004] However, in the industrial production process, sewage often needs to be temporarily stored in storage tanks, especially heavily polluted wastewater. During the storage tank process, the sewage is fermented, including aerobic or anaerobic fermentation, and the sewage is degraded by microbial fermentation, thereby achieving environmentally friendly sewage treatment.

[0005] However, in actual working process, degradation and fermentation treatment is often multi-stage fermentation, so in the prior art, multiple fermentation tanks are used for fermentation. The disadvantage of this method is that the sewage liquid needs to be frequently transferred between tanks, which leads to a low sewage treatment effect.

[0006] Therefore, in the process of sewage fermentation treatment, if multi-stage fermentation treatment can be carried out in a single tank, it can not only avoid the complicated fermentation process, but also improve the sewage fermentation treatment effect. Summary of the invention

[0007] Based on the above background, the purpose of the present invention is to provide a multi-stage fermentation purification treatment device for sewage treatment.

[0008] To achieve the above objectives, the present invention adopts the following technical solutions:

[0009] A sewage treatment multi-stage fermentation purification device comprises a fermentation tank body, wherein the fermentation tank body is divided into a plurality of independent fermentation chambers by a plurality of internal partitions;

[0010] A through pipe connecting the adjacent fermentation chambers is installed at the lower end of the inner partition, and a control valve that automatically opens and closes is installed on the through pipe;

[0011] The fermentation tank body is provided with a vacuum suction structure, through which the fermentation chamber is gradually negatively pressurized, and the fermentation wastewater enters the fermentation chamber under negative pressure;

[0012] The vacuum suction structure comprises a long vacuum suction pipe, and a vacuum pump is installed at the outer end of the long vacuum suction pipe;

[0013] The long vacuum suction pipe is connected with a plurality of vacuum suction pipes respectively located in the fermentation chamber, and an electromagnetic control valve is installed on the vacuum suction pipe.

[0014] Preferably, five inner baffles are fixedly connected to the fermentation tank body;

[0015] The five inner partitions divide the fermentation chamber into a first fermentation chamber, a second fermentation chamber, a third fermentation chamber, a fourth fermentation chamber, a fifth fermentation chamber and a sixth fermentation chamber;

[0016] During the fermentation process, the fermentation wastewater starts to ferment in the first fermentation chamber, and then ferments in the second to sixth fermentation chambers in sequence to complete the entire fermentation process.

[0017] Preferably, the left end of the fermentation tank body is connected to a sewage inlet pipe connected to the first fermentation chamber;

[0018] The bottom of the fermentation tank body is connected with sewage pipes respectively connected to the first fermentation chamber, the second fermentation chamber, the third fermentation chamber, the fourth fermentation chamber, the fifth fermentation chamber and the sixth fermentation chamber;

[0019] A valve is installed on the sewage pipe.

[0020] Preferably, the top of the fermentation tank body is connected with a fermentation agent pumping pipeline respectively connected to the first fermentation chamber, the second fermentation chamber, the third fermentation chamber, the fourth fermentation chamber, the fifth fermentation chamber and the sixth fermentation chamber;

[0021] A valve is installed on the fermentation agent pump pipeline.

[0022] Preferably, the vacuum suction pipe is vertically installed and connected to the long vacuum suction pipe;

[0023] The pipe opening of the vacuum suction pipe is located at the upper end of the fermentation chamber.

[0024] Preferably, the control valve is a solenoid valve.

[0025] Preferably, the first fermentation chamber, the second fermentation chamber, the third fermentation chamber, the fourth fermentation chamber, the fifth fermentation chamber and the sixth fermentation chamber door are respectively fixedly connected with a filter structure;

[0026] The filter screen structure comprises an annular filter screen bracket, in which a filter screen is fixedly connected.

[0027] Preferably, the fermentation tank body comprises a detachable upper tank body part and a lower tank body part.

[0028] Preferably, upper rectangular convex seats are integrally formed on both sides of the upper tank body, and lower rectangular convex seats are integrally formed on both sides of the lower tank body;

[0029] The upper rectangular boss and the lower rectangular boss are fastened by a plurality of bolts.

[0030] Preferably, a sealing gasket strip is installed between the upper rectangular boss and the lower rectangular boss.

[0031] The present invention has the following beneficial effects:

[0032] 1. The fermentation chamber in the tank body is divided into a first fermentation chamber, a second fermentation chamber, a third fermentation chamber, a fourth fermentation chamber, a fifth fermentation chamber and a sixth fermentation chamber; during the fermentation process, the fermentation wastewater starts to ferment in the first fermentation chamber, and then ferments in the second fermentation chamber to the sixth fermentation chamber in sequence to complete the entire fermentation process.

[0033] The sewage is pumped into the first fermentation chamber for fermentation. When the fermentation in the first fermentation chamber is completed, the sewage is pumped into the second fermentation chamber. At this time, the first fermentation chamber is empty and the sewage continues to be pumped into the first fermentation chamber. In this way, the sewage is fermented in six stages, and during the fermentation process, each fermentation chamber will not be idle, so that the sewage can continue to ferment. After the six-stage fermentation, the sewage has a high degree of cleanliness and can be discharged for recycling.

[0034] 2. The fermentation tank body includes a detachable upper tank body and a lower tank body. After the sewage has been treated for a certain period of time, the bolts are removed, and the upper tank body is hoisted up according to the existing hoisting method to clean the tank body and replace the filter screen.

[0035] 3. A plurality of vacuum suction pipes respectively located in the fermentation chamber are connected and installed on the long vacuum suction pipe, and an electromagnetic control valve is installed on the vacuum suction pipe.

[0036] Specifically, the vacuum pipe is installed vertically and connected to the long vacuum suction pipe; the mouth of the vacuum pipe is located at the upper end of the fermentation chamber. During the working process, when the sewage is pumped into the first fermentation chamber to complete the fermentation, the electromagnetic control valve on the vacuum pipe in the second fermentation chamber is controlled to open, and the electromagnetic control valves on the vacuum pipes in the remaining fermentation chambers are closed, and the vacuum pump is turned on. At this time, the second fermentation chamber is in a negative pressure state. Subsequently, the sewage enters the second fermentation chamber. Specifically, after the control valve on the inner partition is opened, the sewage enters the second fermentation chamber. The above method is used to realize that the sewage enters the last fermentation chamber from the first fermentation chamber. In this way, the sewage can be freely converted in different fermentation chambers during the sewage treatment process.

[0037] 4. By installing a filter structure in each fermentation chamber, the degraded sludge in the sewage can be filtered layer by layer, and the sewage can be purified. Finally, after the last stage of fermentation, the sewage is very clean and can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 Schematic diagram of the dispersed structure in an embodiment of the present invention;

[0040] Figure 2 It is a schematic diagram of the overall structure in an embodiment of the present invention;

[0041] Figure 3 Schematic diagram of the structure of the first fermentation chamber to the sixth fermentation chamber in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the principle structure of sewage discharge by the inner partition in an embodiment of the present invention;

[0043] Figure 5 For the embodiment of the present invention Figure 2 A schematic diagram of the structure from another perspective;

[0044] Figure 6 For the embodiment of the present invention Figure 2 Top view of .

[0045] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] Example 1

[0050] like Figure 1-6 As shown, a sewage treatment multi-stage fermentation purification treatment device includes a fermentation tank body 1. During operation, in order to facilitate the subsequent thorough desilting of the tank body, the fermentation tank body 1 includes a detachable upper tank body part 11 and a lower tank body part 12. Upper rectangular bosses are integrally formed on the left and right sides of the upper tank body part 11, and lower rectangular bosses 14 are integrally formed on both sides of the lower tank body part 12; the upper rectangular bosses and the lower rectangular bosses 14 are fastened by a plurality of bolts.

[0051] At the same time, a sealing gasket strip is installed between the upper rectangular boss and the lower rectangular boss 14, thereby improving the sealing performance.

[0052] After the sewage has been treated for a certain period of time, the bolts are removed, and the upper tank body 11 is hoisted in accordance with the existing hoisting method to clean the tank body and replace the filter screen.

[0053] Example 2

[0054] like Figure 1-6 As shown, in this embodiment, based on the structure of embodiment 1, the fermentation tank body 1 is divided into a plurality of independent fermentation chambers by a plurality of internal partitions.

[0055] In this way, multiple independent fermentation chambers are formed in a single tank, and sewage is fermented independently at multiple stages in the single tank.

[0056] Specifically, five inner partitions 4 are fixedly connected inside the fermentation tank body 1 .

[0057] The five inner partitions 4 divide the fermentation chamber into a first fermentation chamber 101, a second fermentation chamber 102, a third fermentation chamber 103, a fourth fermentation chamber 105, a fifth fermentation chamber 105 and a sixth fermentation chamber 106; during the fermentation process, the fermentation wastewater starts to ferment in the first fermentation chamber 101, and then ferments in the second fermentation chamber 102 to the sixth fermentation chamber 106 in sequence, completing the entire fermentation process.

[0058] The sewage is pumped into the first fermentation chamber 101 for fermentation. When the fermentation in the first fermentation chamber 101 is completed, the sewage is pumped into the second fermentation chamber 102. At this time, the first fermentation chamber 101 is empty and the sewage continues to be pumped into the first fermentation chamber 101. In this way, the sewage is fermented in six stages, and during the fermentation process, the fermentation chamber at each step will not be idle, so that the sewage can be fermented continuously.

[0059] After six levels of fermentation, the sewage has a high degree of cleanliness and can be discharged for recycling.

[0060] Example 3

[0061] like Figure 1-6 As shown, based on the structure of Example 2, in order to realize the conversion of sewage between different fermentation chambers, a through pipe 411 connecting adjacent fermentation chambers is installed at the lower end of the above-mentioned inner partition 4, and a control valve 4111 (the control valve 4111 is an electromagnetic valve) that is automatically opened and closed is installed on the through pipe 411.

[0062] At the same time, in order to realize sewage transfer, a vacuum suction structure 5 is installed on the fermentation tank body 1 mentioned above. The fermentation chamber is gradually negatively pressurized through the vacuum suction structure 5, and the fermentation wastewater enters the fermentation chamber under negative pressure; the vacuum suction structure 5 includes a long vacuum suction pipe 52 (the long vacuum suction pipe 52 passes through the front end of the fermentation tank body 1. In order to improve the sealing performance, according to the existing method, an installation port is opened at the front end of the fermentation tank body 1, and a sealing ring (not shown in the figure) is put on the long vacuum suction pipe 52, and it is sealed by a sealant), and a vacuum pump 51 is installed at the outer end of the long vacuum suction pipe 52.

[0063] Meanwhile, the long vacuum suction pipe 52 is connected to a plurality of vacuum suction pipes 53 respectively located in the fermentation chamber, and an electromagnetic control valve 531 is installed on the vacuum suction pipe 53 .

[0064] Specifically, the vacuum suction pipe 53 is vertically installed and connected to the long vacuum suction pipe 52; the pipe opening of the vacuum suction pipe 53 is located at the upper end position in the fermentation chamber.

[0065] During the working process, when the sewage is pumped into the first fermentation chamber 101 and the fermentation is completed, the electromagnetic control valve 531 on the vacuum pipe 53 in the second fermentation chamber 102 is controlled to open, while the electromagnetic control valves 531 on the vacuum pipes 53 in the other fermentation chambers are closed, and the vacuum pump is turned on. At this time, the second fermentation chamber 102 is in a negative pressure state.

[0066] Subsequently, the sewage enters into the second fermentation chamber 102 . Specifically, after the control valve 4111 on the inner partition 4 is opened, the sewage enters into the second fermentation chamber 102 .

[0067] Through the above method, it is achieved that the sewage enters the last fermentation chamber from the first fermentation chamber 101.

[0068] In this way, sewage can be freely converted in different fermentation chambers during sewage treatment.

[0069] Example 4

[0070] like Figure 1-6 As shown, in this embodiment, based on the structure of Embodiment 3, the left end of the fermentation tank body 1 is connected to a sewage inlet pipe 13 connected to the first fermentation chamber 101 (the sewage inlet pipe 13 is installed on the fermentation tank body 1 by a threaded connection, and during the subsequent separation process of the fermentation tank body 1, the sewage inlet pipe 13 is disassembled in advance).

[0071] According to the existing method, the sewage inlet pipe 13 is connected to the sewage supply pipe to achieve frequent pumping of sewage into the first fermentation chamber 101.

[0072] During the fermentation process, in order to pump fermentation agents and degradation agents into the fermentation chamber, the top of the fermentation tank body 1 is connected with a fermentation agent pumping pipeline 2 which is respectively connected to the first fermentation chamber 101, the second fermentation chamber 102, the third fermentation chamber 103, the fourth fermentation chamber 105, the fifth fermentation chamber 105 and the sixth fermentation chamber 106; a valve is installed on the fermentation agent pumping pipeline 2.

[0073] According to the existing method, the fermentation agent pumping pipeline 2 is connected to the external feed pipeline to achieve pumping into the first fermentation chamber 101 to the sixth fermentation chamber 106 according to different fermentation stages during the fermentation process.

[0074] The bottom of the fermentation tank body 1 is connected with a sewage pipe 3 which is connected with the first fermentation chamber 101, the second fermentation chamber 102, the third fermentation chamber 103, the fourth fermentation chamber 105, the fifth fermentation chamber 106 and the sixth fermentation chamber 106 respectively; a valve is installed on the sewage pipe 3.

[0075] After the sewage is fermented and treated through the sewage pipe, the treatment efficiency is explained according to the sewage fermentation. For example, when the sewage has been purified sufficiently in the third fermentation chamber 103, it can be directly discharged in order to reduce the sewage treatment time.

[0076] At the same time, the sewage pipe 3 also functions to discharge sludge. Specifically, after the sewage is fermented, degraded sludge remains in each fermentation chamber of the tank body, and the sludge can be discharged by opening the sewage pipe.

[0077] Example 5

[0078] like Figure 1-6 As shown, in this embodiment, based on the structure of embodiment 4, the doors of the first fermentation chamber 101, the second fermentation chamber 102, the third fermentation chamber 103, the fourth fermentation chamber 105, the fifth fermentation chamber 105 and the sixth fermentation chamber 106 are respectively fixedly connected with filter structures; the filter structure is close to the inner partition 4, so that when the fermentation is completed and the wastewater is transferred, the degraded sludge in the sewage is filtered layer by layer through the filter structure, so that the sewage is purified and the sewage is very clean after the last stage of fermentation and can be recycled.

[0079] The filter structure 6 is a conventional disc filter disclosed in the prior art. Specifically, the filter structure 6 includes an annular filter bracket, and a filter is fixedly connected inside the annular filter bracket. The annular filter bracket is fixed by threading bolts on the annular filter bracket. In order to facilitate the subsequent disassembly of the tank body, the annular filter bracket is fastened to the lower tank body part 12 without affecting the subsequent separation of the upper tank body part 11.

[0080] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A sewage treatment multi-stage fermentation purification device, characterized in that: It comprises a fermentation tank body, wherein the fermentation tank body is divided into a plurality of independent fermentation chambers by a plurality of internal partitions; A through pipe connecting the adjacent fermentation chambers is installed at the lower end of the inner partition, and a control valve that automatically opens and closes is installed on the through pipe; The fermentation tank body is provided with a vacuum suction structure, through which the fermentation chamber is gradually negatively pressurized, and the fermentation wastewater enters the fermentation chamber under negative pressure; The vacuum suction structure comprises a long vacuum suction pipe, and a vacuum pump is installed at the outer end of the long vacuum suction pipe; The long vacuum suction pipe is connected with a plurality of vacuum suction pipes respectively located in the fermentation chamber, and an electromagnetic control valve is installed on the vacuum suction pipe.

2. The multi-stage fermentation purification treatment device for sewage treatment according to claim 1, characterized in that: Five inner baffles are fixedly connected to the fermentation tank body; The five inner partitions divide the fermentation chamber into a first fermentation chamber, a second fermentation chamber, a third fermentation chamber, a fourth fermentation chamber, a fifth fermentation chamber and a sixth fermentation chamber; During the fermentation process, the fermentation wastewater starts to ferment in the first fermentation chamber, and then ferments in the second to sixth fermentation chambers in sequence to complete the entire fermentation process.

3. The sewage treatment multi-stage fermentation purification treatment device according to claim 2, characterized in that: The left end of the fermentation tank body is connected to a sewage inlet pipe connected to the first fermentation chamber; The bottom of the fermentation tank body is connected with sewage pipes respectively connected to the first fermentation chamber, the second fermentation chamber, the third fermentation chamber, the fourth fermentation chamber, the fifth fermentation chamber and the sixth fermentation chamber; A valve is installed on the sewage pipe.

4. The sewage treatment multi-stage fermentation purification treatment device according to claim 2, characterized in that: The top of the fermentation tank is connected with a fermentation agent pumping pipeline respectively connected to the first fermentation chamber, the second fermentation chamber, the third fermentation chamber, the fourth fermentation chamber, the fifth fermentation chamber and the sixth fermentation chamber; A valve is installed on the fermentation agent pump pipeline.

5. The sewage treatment multi-stage fermentation purification treatment device according to claim 2, characterized in that: The vacuum suction pipe is vertically installed and connected to the long vacuum suction pipe; The pipe opening of the vacuum suction pipe is located at the upper end of the fermentation chamber.

6. The multi-stage fermentation purification treatment device for sewage treatment according to claim 1, characterized in that: The control valve is an electromagnetic valve.

7. The sewage treatment multi-stage fermentation purification device according to claim 2, characterized in that: The first fermentation chamber, the second fermentation chamber, the third fermentation chamber, the fourth fermentation chamber, the fifth fermentation chamber and the sixth fermentation chamber door are respectively fixedly connected with a filter structure; The filter screen structure comprises an annular filter screen bracket, in which a filter screen is fixedly connected.

8. The multi-stage fermentation purification treatment device for sewage treatment according to claim 1, characterized in that: The fermentation tank body comprises a detachable upper tank body part and a lower tank body part.

9. The sewage treatment multi-stage fermentation purification treatment device according to claim 8, characterized in that: The upper tank body has upper rectangular convex seats integrally formed on both sides, and the lower tank body has lower rectangular convex seats integrally formed on both sides; The upper rectangular boss and the lower rectangular boss are fastened by a plurality of bolts.

10. The sewage treatment multi-stage fermentation purification device according to claim 9, characterized in that: A sealing gasket strip is installed between the upper rectangular boss and the lower rectangular boss.

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